SMA WB 3300-11 Installation - Manual (Page 49)

SMA Solar Technology AG Opening and Closing
Installation Manual WB33-38-IA-IEN120940 49
7. Check whether all LEDs and the display have gone out.
8. Loosen the screws of the enclosure lid.
9. Slowly pull the enclosure lid forward and off.
☑ The inverter is now open and de-energised.
DANGER!
Danger to life due to high voltages in the inverter
The capacitors in the inverter take 15 minutes to discharge.
• Wait 15 minutes before opening the inverter.